Ah, the awkward old dance where two people try to walk through the doorway and end up mirroring each other's movements trying to get out of each other's way...

The aviation world actually solved this problem a long time ago. Everyone turns to their right. FAR 91.113:

> (e) Approaching head-on. When aircraft are approaching each other head-on, or nearly so, each pilot of each aircraft shall alter course to the right

(among other collision-avoidance regs in that section)